Graphics is going to be slightly subjective, I suppose, but:
Both images are pretty standard for their respective games' graphics. Look at the detail and depth on LoS' vampire, compared to DI's somewhat monotone and even slightly jaggy demon. And while Dante is a little restricted by his shirtlessness, compare the folds and creases in Gabriel's tunic to Dante's painted-on textures. The lighting is also notably more nuanced.
I will give that Hell's imagery was interesting, but I don't want to credit the game with that, as it's taken wholesale from Alighieri's writings and Bosch's famous paintings. I also feel that LoS' varied locations kept it from getting bogged down, as the end of DI did in samey, greyish-brown areas that were not at all visually interesting.
While I respect Patrick Stewart, his narration wasn't too big a deal for me. I really liked Gabriel and Pan's voices, though. Cornell and Carmilla were excellent as well. And the final boss, whose voice was actually a pleasant surprise. The whole cast, I feel, did admirably.
The end boss was a surprise, but if you pay attention to the story, his appearance does in fact make sense. It's more apparent when you see subtle clues on a second playthrough. I really liked how the storyline was resolved, though Gabriel's characterization was not what it should have been.